given is the identity of
then
i have to find abcdlm. i always write so many useless steps in solving simultaneous equ by elimination. would any one give me some advice and a general guide so that i could do it quick and fast without writing redundant steps? thanks.
The first thing I thought when I saw your equations was to take the equation containing the least number of variables, then substitute.
When I see an immediate factor that would eliminate a given variable, without putting too many variables into one equation, I do it..
If you have given examples, perhaps it'd help